function getData() {


        var URL = '@Url.Action("LoadData")';

         $.ajax({
            type: "GET",
            url: URL,
            data: { id_cource: $("#cource").val() },
            contentType: "application/json; charset=windows-2151",
            dataType: "json",
            success: function (response) {

                alert("Great! Записи были обновлены успешно");
            },
            error: function (msg) {
                debugger;
                alert("Error");
            }
        });

jQuery(document).ready(function($) {

        $("#chart").kendoChart({
                        @*theme: $(document).data("kendoSkin") || "default",*@
            title: {
                text: "Анкета организации",
                font: "14px Arial,Helvetica,sans-serif",
                position: "top"
            },

            legend: { position: "top" },

            chartArea: {
                // width: 800,
                height: 1200
            },

            dataSource: new kendo.data.DataSource({
                transport: {
                    read: {
                        url: '@Url.Action("LoadData", "Anketa_org")',
                        data: { id_cource: $("#cource").val() },
                        dataType: "json",
                        type: "GET",
                        contentType: "application/json; charset=windows-2151"
                    }
                },
                schema: {

                        fields: {
                            Col1: { type: "double" },
                            Col2: { type: "double" },
                            Legend: { type: "string" }
                        }

                }
            }),

            seriesDefaults: { type: "column" },
            series:
                [{
                        name: "Важность критерия",
                        field: "Col1"
                    },
                    {
                        name: "Удовлетворение полученным",
                        field: "Col2"
                    }],

            categoryAxis: {
                field: "Legend",

                labels: {
                    template: "<#= shortLabels(value) #>",
                    rotation: -90
                },

                valueAxis: {
                    labels: { format: "{0}%" },
                    majorUnit: 10,
                    max: 100
                },
                tooltip: {
                    visible: true,
                    format: "{0}%"
                }
            }
        });

    });



function refresh() {


        var chart = $('#chart').data("kendoChart");

        var dataSource = new kendo.data.DataSource({
            transport: {
                read: {
                    type: "GET",
                    url: '@Url.Action("LoadData")',
                    data: { id_cource: $("#cource").val() },
                    contentType: "application/json; charset=windows-2151",
                    dataType: "json",
                }
            },
            schema: {
                model:{
                  fields: {
                    Col1: { type: "double" },
                    Col2: { type: "double" },
                    Legend: { type: "string" }
                  }
                }
            }
        });



        chart.dataSource = dataSource;
        chart.refresh();
    };


Controller


 [HttpGet]
        public ActionResult BarCharts_org()
        {
           // WebMsgBox.Show("Привет");
            return View();

        }

        [HttpGet]
        public JsonResult LoadData(Guid id_cource)
      {

         var  ListItems = new List<Item>();

         double[] tempVal_1 = new double[27];
         double[] tempVal_2 = new double[27];
         int cnt;

...

         for(int i=0;i<27; i++)
         {
             Item itm =new Item();

             itm.Col1 = tempVal_1[i];
             itm.Col2 = tempVal_2[i];
             itm.Legend = tempStr[i];
             ListItems.Add(itm);
         }

return Json(ListItems, JsonRequestBehavior.AllowGet);